111321013 has 4 divisors (see below), whose sum is σ = 112004128. Its totient is φ = 110637900.

The previous prime is 111320999. The next prime is 111321047. The reversal of 111321013 is 310123111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111321013 - 2¹⁷ = 111189941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111320984 and 111321002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111324013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341313 + ... + 341638.

It is an arithmetic number, because the mean of its divisors is an integer number (28001032).

Almost surely, 2^111321013 is an apocalyptic number.

It is an amenable number.

111321013 is a deficient number, since it is larger than the sum of its proper divisors (683115).

111321013 is an equidigital number, since it uses as much as digits as its factorization.

111321013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683114.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 111321013 is about 10550.8773568836. The cubic root of 111321013 is about 481.0523972466.

Adding to 111321013 its reverse (310123111), we get a palindrome (421444124).

The spelling of 111321013 in words is "one hundred eleven million, three hundred twenty-one thousand, thirteen".